HT-CM400 NXP Semiconductors, HT-CM400 Datasheet - Page 39

• Manufacturer Part Number: HT-CM400
• Description: Ht Cm400; Ht Rm440 Family; Ht Rm800 Family Interface Protocol Reader - Host
• Manufacturer: NXP Semiconductors

98-02-10
3.7.24 PollTags
This command sets the read/write device to Permanent Reading Mode for specified types of
transponders.
The read/write device attempts continuously to synchronize on and read specified types of
transponders. If it succeeds and all checks report positive results, the device sends data for
transponder identification via the serial interface. After that the read/write device returns to
Normal Mode.
Using the byte -mode- you select the types of transponders for poll-operation.
To avoid conflicts it is important to set only one bit at a time for following transponder types:
If bit 3 (HITAG 2 Password Mode) or bit 4 (HITAG 2 Crypto Mode) is selected, we recommend
to activate the „Check PW TAG“ option in Control_LT (located in the EEPROM of the
read/write device ... see Chapter „Personalization“) to reduce the possibility to erroneously
identify other types of (especially read-only) transponders as HITAG 2 Password or HITAG 2
Crypto.
C-Function: void proloc_PollTags (BYTE_T mode, char *data);
Header-File: PROLIB6.H
Serial protocol:
HOST - READ/WRITE DEVICE
mode:
READ/WRITE DEVICE - HOST
If polling for HITAG 1 Standard Protocol Mode was successful:
more: Proximity Reader:
0x03
0x08
Advanced
PIT
HITAG 1 Standard Protocol Mode or
Long Range Reader: more equal to one indicates that there is at least one additional
HITAG 1
Protocol
Mode
Poll
Status
7
'l'
or
HITAG 2
mode
Mode B
0x01
Public
Poll
6
HITAG 2 PublicC
7
BCC
SNR-LSB
more is always 0.
transponder in the reading area of the read/write device.
HITAG 2
Mode C
Public
Poll
5
0
HITAG 2
Crypto
------
------
Mode
Page 39 (104)
Poll
Rev. 1.0
or
4
HITAG 1 Advanced Protocol Mode
31
HITAG 2 PublicB
SNR-MSB
HITAG 2
Password
Mode
Poll
3
24
Poll
more
PIT
2
HITAG 2
BCC
Mode A
Public
Miro /
Communication Reader-Host
Poll
1
HITAG 1
Standard
Protocol
Htswp.doc/HS
Mode
Poll
0